Portion of a keyboard



FIG. 1 is a perspective view of a portion of a keyboard showing our newdesign;

FIG. 2 is a perspective view of the design with an area shown in dashedlines;

FIG. 3 is an enlarged view of the area shown in dashed lines in FIG. 2;

FIG. 4 is a top view of the design;

FIG. 5 is a front view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a right side view thereof;

FIG. 8 is a rear view thereof; and,

FIG. 9 is a bottom view thereof.

The broken line showing of the remainder of the keyboard is included forthe purpose of illustrating unclaimed portions of the article and formsno part of the claimed design.

The ornamental design for a portion of a keyboard, as shown anddescribed.